-
USB设备
USB设备端固件程序,枚举部分是全部程序的基础和重心,只有主机对设备枚举成功后,主机才能和设备进行正常的通信
USB的枚举过程分为4个状态.
1.接入态
v主机检测到USB设备插上,击活端口,并发送复位命令(保持10ms)
2.默认态
v主机使用默认地址读取设备描述符 (GET_DESCRIPTOR)
v主机分配给设备一个总在线的唯一地址 (SET_ADDRESS)
3.地址态
v主机从新的地址获取设备描述符(GET_DESCRIPTOR)
v主机获取所有设备的配置描述符(GET_DESCRIPTOR)
4.配置态
v主机设置描述符(设备,配置) (SET_CONFIGURATION)
v主机读取配置状态(可选) (GET_CONFIGURATION)
v主机读取接口状态(可选) (GET_INTERFACE)
-USB device-side firmware, enumerate all part of the foundation and focus of the procedure, only the host of equipment after the successful enumeration, the host and equipment in order to engage in normal communication USB enumeration process is divided into four status. 1. Access state v host detected USB devices plug in, hit live ports, and send the reset command (to maintain 10ms) 2. default state v Use the default address of the host to read device descriptor (GET_DESCRIPTOR) v host assigned to the equipment of a total online only Address (SET_ADDRESS) 3. A
- 2022-01-21 17:52:38下载
- 积分：1
-
window的驱动编写入门，以及usb的相关资料
window的驱动编写入门，以及usb的相关资料-the preparation of entry-window of the driver, as well as relevant information on usb
- 2023-08-16 02:50:03下载
- 积分：1
-
USB设备驱动程序源码
USB设备驱动程序源码-USB device driver source code
- 2022-05-30 03:59:31下载
- 积分：1
-
高容量的USB 2设备将采用ASIC技术与嵌入式设计…
High volume USB 2.0 devices will be designed using ASIC technology with embedded USB 2.0 support.
For full-speed USB devices the operating frequency was low enough to allow data recovery to be handled
in a vendors VHDL code, with the ASIC vendor providing only a simple level translator to meet the USB
signaling requirements. Today s gate arrays operate comfortably between 30 and 60 MHz. With USB 2.0
signaling running at hundreds of MHz, the existing design methodology must change.
- 2023-07-03 16:35:03下载
- 积分：1
-
Cypress USB firmware procedures, the development of learning USB2.0
一些Cypress公司USB2.0固件程序，学习USB2.0开发-Cypress USB firmware procedures, the development of learning USB2.0
- 2022-03-31 08:00:05下载
- 积分：1
-
USB 飞力浦固件开发源码:基本业务处理功能，完整开发文档，已编译通过...
USB 飞力浦固件开发源码:基本业务处理功能，完整开发文档，已编译通过-the USB source of Philips:
the base function ,all empolder source code,can compile OK.
- 2023-05-10 07:30:03下载
- 积分：1
-
网上收集的利用nios软核，使用isp1362芯片开发的u盘程序，有助于usb开发的理解和ufi协议的理解。已经验证，完全可用xp自带驱动。...
网上收集的利用nios软核，使用isp1362芯片开发的u盘程序，有助于usb开发的理解和ufi协议的理解。已经验证，完全可用xp自带驱动。-Collected online using Nios soft-core, use isp1362 chip development process u disk, usb help develop the understanding and agreement ufi understanding. Has been verified, fully available to bring their own driver xp.
- 2023-06-02 11:10:03下载
- 积分：1
-
一个简单的USB键盘驱动程序
一个简单的usb键盘驱动-a simple USB Keyboard Driver
- 2022-07-16 23:41:52下载
- 积分：1
-
TUSB3210固件开发源程序（C语言、开发环境keil)
TUSB3210固件开发源程序（C语言、开发环境keil)-TUSB3210 source firmware development (C language development environment keil)
- 2022-12-13 13:10:03下载
- 积分：1
-
USB Host 开发中支持数码相机的源码。即Picture To Picture协议的完整实现...
USB Host 开发中支持数码相机的源码。即Picture To Picture协议的完整实现-Source code for USB Host development supporting digital camera. Full implement of Picture To Picture Protocol.
- 2022-07-09 19:36:15下载
- 积分：1
